81749072 (number)

81749072 is an even 8-digits composite number following 81749071 and preceding 81749073. In scientific notation, it is written as 8.1749072 × 10^7. The sum of its digits is 38. It has a total of 5 prime factors and 10 positive divisors. There are 40874528 positive integers (up to 81749072) that are relatively prime to 81749072.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand seventy-two

Notation

Scientific notation 8.1749072 × 10^7
Engineering notation 8.1749072 × 10^6

Prime Factorization of 81749072

Prime Factorization 2 × 2 × 2 × 2 × 5109317

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10218634
Product of the distinct prime numbers

The prime factorization of 81749072 is 2 × 2 × 2 × 2 × 5109317. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 4, 74, 51, 755, 172, 1552, 556, 45471, 66655, 354362, 653300, 6332156, 7773138, 91448922, 11510270, 155906074, 504573797, 8282209464, 1647519569

Basic calculations (n = 81749072)

Multiplication

n×y
n×2 163498144
n×3 245247216
n×4 326996288
n×5 408745360

Division

n÷y
n÷2 40874536
n÷3 27249690.666667
n÷3 20437268
n÷5 16349814.4

Exponentiation

ny
n2 6682910772861184
n3 5.463217539402E+23
n4 4.4661296398024E+31
n5 3.6510195348554E+39

Nth Root

y√n
2√n 9041.5193413497
3√n 434.0045445382
4√n 95.086904152726
5√n 38.238123036272

Divisors of 81749072

1, 2, 4, 8, 16, 5109317, 10218634, 20437268, 40874536, 81749072

10 divisors

τ Total Divisors 10
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749071
Sum of the proper positive divisors of n
A Arithmetic Mean 0.1
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 10
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749072 can be divided by 10 positive divisors. The sum of these divisors (counting 81749072) is 1, the average is 0.1.

Base conversion 81749072

Base System Value
2 Binary 100110111110110010001010000
3 Ternary 12200211021122102
4 Quaternary 10313312101100
5 Quinary 131411432242
6 Senary 12040055532
8 Octal 467662120
10 Decimal 81749072
12 Duodecimal 234645a8
16 Hexadecimal 4df6450
20 Vigesimal 15aicdc
36 Base36 1co5zk

Cryptographic Hash Functions

md5 ba6acc10987f2f6878f31acb81a15b67
sha1 9c49c8a1606a59ff288b994b8e8145850c4c271c
sha256 fc2f448ad01fcc7a4aa1e52460a4b9cb29724b5cc757d8d56ef48ceb6efbc64f
sha512 6206916e110a1467cb5c43eb7c535b96c06a15a14fd10a5dc2ed5ad9f8b87cd121a319e9fcc86b2aca3b40fb119ecc8076907378edbe949805d18ac7991f3c57
ripemd-160 682057f83c492c30b8c97d3ea28f49ec24f7b598

81749072 as geometric shapes

Circle

Radius = n
Diameter 163498144
Circumference 513644568.06597
Area 2.0994983388617E+16

Sphere

Radius = n
Volume 2.2884272115664E+24
Surface area 8.3979933554467E+16
Circumference 513644568.06597

Square

Length = n
Perimeter 326996288
Area 6682910772861184
Diagonal 115610646.33381

Cube

Length = n
Surface area 40097464637167104
Volume 5.463217539402E+23
Space diagonal 141593546.17561

Equilateral Triangle

Length = n
Perimeter 245247216
Area 2.8937852502612E+15
Altitude 70796773.087803

Triangular Pyramid

Length = n
Surface area 2.8937852502612E+15
Volume 6.4384636153475E+22
Height 38536882.111272